凌日



水星和平静的太阳

2019-11-14

2019 November 14 Mercury and the Quiet Sun Image Credit & Copyright: John Chumack Explanation: On November 11, 2019 the Sun was mostly quiet, ...


水星凌日

2019-11-14

The planet Mercury is seen in silhouette, low center, as it transits across the face of the Sun, Monday, Nov. 11, 2019, from Washington, D.C. Merc...


水星的剪影

2019-11-14

2019 November 13 Mercury in Silhouette Image Credit & Copyright: Martin Wise Explanation: The small, dark, round spot in this solar close up i...


水星凌日

2019-11-10

2019 November 10 A Mercury Transit Sequence Image Credit & Copyright: Dominique Dierick Explanation: Tomorrow -- Monday -- Mercury will cross the ...


在小小行星搜寻系外行星

2019-09-15

2019 September 14 Little Planet to Exoplanets Image Credit & Copyright: Petr Horálek / ESO Explanation: Of course this little planet is really...